Two-part self-locking rivet for tool-handles



H. B. HEMINGIWAY.

TWO-PART SELF LOCKING RIVET FOR TOOL HANDLES;

APPLICATION mu) ubv.1, 1919.

1,33 9,198 atenmd May 4, 1920.

UNITED STATES PATENT oEEIoE.

HORACE B. HEMINGWAY, OF NEW HAVEN, CONNECTICUT, ASSIGNOR T0 WINCHESTER,REPEATING ARMS 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

TWO-PART SELF-LOCKING RIVET FOR TOOL-HANDLES.

Specification of Letters Patent.

Patented. May 4, 1920.

Application filed November 1, 1919. Serial No. 335,138.

To all whom it may concern:

Be it known that I, HORACE B. HEMING- WAY, a citizen of the UnitedStates, residing at New Haven, in the county of New Haven and State ofConnecticut, have invented a new and useful Improvement in Two-PartSelf-Locking Rivets for Tool- I-Iandles; and I do hereby declare the following, when taken in connection with the accompanying drawings and thecharacters of reference marked thereon, to be a full, clear, and exactdescription of the same, and which said drawings constitute part of thisapplication, and represent, in-

Figure 1. An enlarged View in transverse section of a tool-handleshowing the use of my improved rivet.

Fig. 2. A view in elevation showing the two identically alikecomplementary parts of my improved rivet as positioned preparatory tobeing clenched.

Fig. 3. A detached view in elevation of one of the said parts.

Fig. 4. A corresponding edge view thereof.

My invention relates to an improved twopart self-locking rivetparticularly designed for securing the handle-scales of knives to thehandletangs thereof but also applicable for use in the manufacture ofscrew-drivers, wrenches and a wide range of kindred tools havinghandle-scales, the object being to provide simple and efiicient meansfor securing the scales in place.

Vith these ends in view my invention consists in a two-part,self-locking rivet composed of two identically alike complementary partshaving certain details of construction as will be hereinafter describedand pointed out in the claims.

I11 carrying out my invention as herein shown, I produce a rivet of twoidentically alike complementary parts each of which consists of anoverhanging head 2, and a relatively long, slender shank comprising acylindrical butt 3 and a semi-circular spur 4 the face of which lies inthe median longitudinal plane of the butt. The face of the spur 4 mergesat its butt end into a curved shoulder forming a deflecting-surface 5,while at its outer end the face of the spur is formed with acorresponding reversely curved deflecting-surface 6. These two parts,when fitted together as shown in Fig. 2, unite to form a double headedrivet joined by what is tantamount to a cylindrical shank.

In using my improved rivet as shown in Fig. 1, its respective parts arepassed in opposite directions through suitable alined countersunktransverse holes 7 formed in handle-scales 8 applied to a handle-tang 9having a circular hole 10 alined with the holes 7 aforesaid and adaptedin diameter to receive with a snug fit the shank formed by thejuxtaposition of the spurs of the respective parts of the rivet as shownin Fig. 2. The parts with their spurs thus held to gether by the wallsof the hole 10, are now driven together whereby the spurs are caused toride one upon the other, the deflectingsurface at the outer end of onespur engaging with the deflecting-surface at the base of the other spurand vice versa, and whereby the outer ends of the. spurs are curledoutward and caused to penetrate into the wood of the handle-scales whichare thus clenched upon the handle-tang which meanwhile and always holdsthe two spurs together at a point about midway of their length as shownin Fig. 1. The handle-scales, the handle-tang and the two parts of therivet are thus firmly locked together.

I claim: 7

A two-part self-locking rivet consisting of two identically alikecomplementary parts, each having an overhanging head and a shankcomprising a cylindrical butt and a semi circular spur the face of whichlies in the median longitudinal plane of the butt, there being a curveddeflecting-surface between the face of the spur and its butt and theouter end of the spur being reversely curved to form adeflecting-surface.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

HORACE B. HEMINGWAY.

Witnesses:

DANIEL H. VEADER, ERIK S. PALMER.

